DailyTech came across the specifications of NVIDIA's upcoming GeForce 7900 GTX (G71):
90nm
PCIe native
655MHz core frequency
256-bit memory interface
52GB/sec. memory bandwidth
15B pixels/sec. fill rate
1450M vertices/sec.
24 pixels per cycle
Built in twin dual-link DVI support for twin 2560x1600 resolution displays
The clockspeeds are still unconfirmed, but according to their sources 655MHz will be the final number.
Pictures aren't available yet but the GeForce 7900 GTX will be launched with a dual-slot design. By late March we can expect a single-slot version, designed for Quad SLI setups.
According to other rumours the GeForce 7900 GTX will retail for $499.